
#include <iostream>

#ifdef __linux__
	void func()
{
	std::cout << "linux系统" << std::endl;
}
#elif WIN32
	void func()
{
	std::cout << "windows系统" << std::endl;
}
#else
	
	void func()
{
	std::cout << "系统" << std::endl;
}
#endif 

int main()
{

	func();
	return 0;
}

